http://bugs.winehq.org/show_bug.cgi?id=21043
--- Comment #22 from NSLW lukasz.wojnilowicz@gmail.com 2009-12-23 12:50:18 --- (In reply to comment #21)
Perhaps you could try the latest 195.30 beta drivers those accelerate more parts of XRender.
Lates 195.30 beta drivers don't help.